Well-borijstcr apparatus



B. BOYKIN,'1R. WELL BORING APPARATUS,

1,398,413. 7 APPLICATION FILED !}\PR. 29, 1921. 29,

3 SHEETS-SHEE'I I B. BOYKIN, 1R.

wm summa- APPARATUS.

APPLICATION FILED APR.29, 192l- Patented Nov. 29, 1921.

3 SHEETS-SHEET 2.

F2)? Ill/l III/[[(lI/(IIIIIIIIIIII [III I III Patented Nov. 29, 1921 3 SHEETS-SHEET 3.

- V a elite-wag w MS UNITED STATES BURWELL BOYKIN, JR.,

PATENT OFFICE.

or BEAUMONT, TEXAS.

WELL-BORING APPARATUS.

T 0 all whom it may concern:

Be it known that I, BURWELL BOYKIN, Jr, a citizen of the United Statearesiding at Beaumont, in the county of Jefferson and State of Texas, have invented a new and useful l/Vell-Boring Apparatus, of which the following is a specification.

This invention relates to well drilling apparatus, and more particularly to a novel form of power transmitting means employed for transmitting rotary movement to the 1satring of pipe, which supports the boring The primary object of the invention is to provide means for insuring against the table forming the main support for the pipe, raising or lifting from the surface on which the support is positioned','when certain boring conditions are encountered.

A further object of the invention is to provide a novel locking means designed to lock the rotary elements of the drilling apparatus against movement, While the pipe or drilling tool is being adjusted or moved within its support.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings Figure 1 is a plan view of a well drilling apparatus constructed in accordance with the present invention, the same being partly broken away to illustrate the gearing.

. Fig. 2 is a longitudinal sectional view, through the apparatus.

locking members being moved into and out of operationby suitable means not shown.

Specification of Letters Patent. Patented N 29, 1921.

Application filed April 29, 1921.

Serial No. 465,475.

The hub or main bearing 9 is provided with a relatively central opening, the upper end thereof being tapered to accommodate the plug 10 which is also provided with an opening to accommodate the pipe 11, which is used in the boring operation, and due to mesh with the teeth of the pinion 14 mounted on the shaft 15 and which functions to equalize the pressure on the table 12 to maintain the same in a horizontal position, during the boring operation. Supported under the table 12 is a support 16 which is provided with a run-way 17 to accommodate the rollers 18 that also contact with the table 12, to permit the table to move freely over the support 16.

The main or operating shaft is indicated at 19 and is supported in the bearings 20 and 21, there being provided a clutch member 22 for controlling the movements of the shaft 19 to control the operation of the table 12.

Secured to the shaft 19 adjacent to one end thereof, is the power pinion 23 which also meshes with the teeth 13 of the table 12, to impart rotary movement thereto. Formed in the upper surface of the table are the openings 24 which accommodate a bar such as indicated at 25, the bar being shown as positioned within one of the openings. This bar 25 is provided with upper smooth surfaces as at 26 that contact with the laterally extending arm 27 which is secured to the pipe section 28 so that movement of the table 12 will cause the bar 25 to contact with the arm 27 to accomplish the rotation of the train of pipe.

Formed in the upper surface of the hub or main bearing 9 are openings 29 which are designed to receive one end of the bar 30 which contacts with the arm 31 that has connection with the pipe. From the foregoing it will be seen that during the operation of the apparatus, if the bit, which is carried at the lower end of the train'of pipes contacts with a hard surface, the table instead of being forced away from the operating pinion will be moved upwardly, with the result that the teeth 13 carried thereby will be forced into close engagement with the teeth of the operating pinion 23, to the end that the tool will be forced into its work, and not away from the same, as is the case with tables which are operated through the medium of teeth positioned above the main pinion 23.

Having thus described the invention, what is claimed as new is 1. In a device of the character described, a main bearing, a table keyed to the main bearing, means operating above the main bearing for imparting rotary movement to a boring pipe, gearing for imparting rotary movement to the table, teeth carried by the table and cooperating with the gearing, said gearing operating above the teeth, and means for locking the bearing and table against rotary movement.

2. In a device of the character described, a main bearing, teeth formed at the base of the main bearing, locking members associated with the lower end of the main bearing and having cut out portions adapted to accommodate the teeth for locking the bearing member against movement, a pipe supported within the bearing member, means for secur- 3. In a device of the character described,

a main bearing, a table keyed to the bearing, a support disposed under thetable and carrying rollers, said'rollers adapted to engage the lower surface of the table, means for imparting rotary movement to the table, a pipe supported by the bearing, a bar extending upwardly from the table, an arm secured to the pipe and extending laterally therefrom, said bar adapted to contact with the arm to impart rotary movement thereto, and means extending upwardly from the bearing and cooperating with an arm on the pipe for transmitting rotary movement of the bearing to the pipe.-

In testimony that I claim the foregoing V as my own, I have hereto affixed my signature in the presence of two witnesses.

BURWVELL BOYKIN, JR. 

